The fleet department at Tennant Co. used a simple method for allowing its employees a say in which crane they should use to lift batteries in and out of floor cleaning machines. The employees participated in a vote: Green meant yes, and red meant no.

Employee buy-in on the cranes was important to Tennant Co., a global manufacturer of floor cleaning equipment and floor compounds. The company changes many batteries in its customer’s cleaning machines. But through the years, an increasing number of Tennant employees who were manually lifting the batteries began reporting back injuries …

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